ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,523,583, issued on Jan. 13, was assigned to TECHNICAL INSTITUTE OF PHYSICS AND CHEMISTRY, CHINESE ACADEMY OF SCIENCES (Beijing).
"Measuring method and device for trace and ultra-trace oil content" was invented by Zhongjun Hu (Beijing), Bingming Wang (Beijing), Qiang Li (Beijing) and Linghui Gong (Beijing).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to a measuring method and device for trace and ultra-trace oil content. The measuring device of the present disclosure includes a cryogenic enriching device, an extracting device and an infrared spectrometer; The cryogenic enriching device includes a Dewar container and a U-sh...